body {
  min-height: 100vh;
  margin: 0;
}

#app {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 20px;
  padding: 20px;
}

.chart {
  flex: 1;
  display: flex;
  justify-content: center;
}

svg {
  display: block;
  max-width: 100%;
}

.tooltip {
  position: absolute;
  padding: 10px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid #ddd;
  border-radius: 4px;
  pointer-events: none;
  font-size: 14px;
  line-height: 1.4;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}